Clock



FIG. 1 is a perspective view of a clock of the present invention;

FIG. 2 is a right side elevational view of the clock of FIG. 1, the left side being a mirror image thereof;

FIG. 3 is a top plan view of the clock of FIG. 1;

FIG. 4 is a rear elevational view of the clock of FIG. 1; and,

FIG. 5 is a front elevational view of the clock of FIG. 1. 

The ornamental design for a clock, as shown and described. 